HMC661LC4BTR

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RF Amplifiers

The HMC661LC4BTR is an RF Amplifier that enables up to 30-dB gain in a wide bandwidth of frequencies. This device is ideal for applications such as low noise pre-amplifiers, active filters, radio transmitter systems, and test and measurement systems. It has a wide gain block that covers the frequencies from 0 to 6 GHz and an integrated high-linearity low-noise amplifier.

Application Field

The HMC661LC4BTR is an ideal component for a wide variety of applications including but not limited to wireless telecommunications, digital radio systems, general microwave and millimeter-wave systems, as well as aerospace and defense markets. It is used in wireless local loop (WLL) systems, satellite communications systems, digital television (DTTV/HDTV) systems, and digital cable TV (DCTV). Other markets include cellular/PCS basestations, military communications equipment, and ground to air, air to air, and ship to air systems.

This amplifier is also used in WiMAX applications, including both time-division duplex (TDD) and frequency-division duplex (FDD) modes of operation. A number of typical WiMAX applications that benefit from this amplifier\'s high dynamic range include WiMAX basestations, repeaters, and remote terminals. The device also has excellent match, making it suitable for applications that require a dynamic performance envelope, such as those in cellular systems and DSL systems.

Working Principle

The HMC661LC4BTR amplifier operates using a voltage-variable gain control input. This amplifier has two stages of gain control, each with its own gain-control voltage. It allows gain to be adjusted from 0 to 30 dB over the full frequency band. The gain-control signals require a range of 0-5.5 V and +4 dBm of input power for gain control. When signals are applied with varying degrees of attenuation, the amplifier produces an output that is independent of the degree of attenuation.

In addition to the gain-control voltage, the amplifier also contains a wide bandwidth transistor that runs at a maximum frequency range of up to 6GHz. The amplifier also contains an active bias network that provides power during RF operation. This active bias network is used to maintain the gain of the amplifier in the event of variations in the supply voltage or current.

The HMC661LC4BTR is also an amplifier that can detect and process signals with very low distortion. This is a result of the differential active bias network providing great linearity and low distortion. Furthermore, the amplifier has a fast settling time of 5 ns, allowing the amplifier to process signals quickly and accurately.

Conclusion

The HMC661LC4BTR amplifier is an ideal component for enhancing the performance of various applications in RF systems. With its high linearity, low noise, wide bandwidth, and fast settling time, it is a great choice for applications such as low noise pre-amplifiers, active filters, radio transmitter systems, and test and measurement systems. Furthermore, it is an ideal solution for a wide range of systems in wireless telecommunications, digital radio systems, general microwave and millimeter-wave systems, as well as aerospace and defense markets.

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